Improvement in heaters



'c. T. BOARDMAN.

. I Heater. N I I 1 v 0 42,161- I Patented April 5,1864.

n. PETERS. Phahrljlhogmpher. wamzn m. D c.

NlTED .fSTATE-s PATENT OFFICE.

CHARLES T. BOARDMAN, OF BERGEN POINT, NEW JERSEY.

| M PROVE-M ENT' IN H EATERS.

Specification forming part of Letters Patent No. 42,16 I, dated April 5, 1864.

To all whom it may concern.-

Be it known that I, CHARLES T. BOARD- MAN, of Bergen Point, in the county of Hudson and State of New Jersey, have invented a new and useful Improvement in SteaurHeating Apparatus; and I do hereby declare that the following is afull, clear, and exact description ofthe same, reference being had to the accompanying drawings, forming part of this specification, in which- 'tion with steam-boilers for heating and for the supply of buildings or apartments; anditeonsists in a certain arrangement of defiectors,in combination without an upright series of steam-tubes, an upper steam-chamber, and a surrouudingair-casing, for thepurpose of conducting the air to'be heated among the said tubes and in contact with the whole of the surface of the said upper chamber.

The second part of my invention consists in a certain arrangement of the flue of a boiler for steam heating, in combination with an aircasing surrounding the boiler and indicator, whereby the heat of the escaping gaseous products of combustion is economized by using it partly to heat the boiler and partly to heat the airfor the supply of the building or apartment.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A is an upright plain cylinder-boiler, having arranged within it a fire-box, B, and surrounded entirely with an annular flue, G, into,

the upper part of which the gaseous products of combustion pass from the upper part of the fire-box by means of two or more short horizontal passages, a c, .and from the lower part of which the said products pass through a passage, 1), to the chimney. The boiler is filled with water to a suitable height above the crown-plate c ofthe fire-box to prevent the said plate from burning, and its upper part, d, serves as steamspace.

, D D are a series of upright steam-tubes,and E a steam-chamber above them. These tubes and chamber constitute the radiator. The 7 F is an upright cylindrical casing of larger,

diameter than the line C and chamber E, in closing the whole of the boiler and radiator,

having openingsff around the lower part and openings 9 g at some distance above the boiler for the admission of fresh air to be heated and supplied to the building or apartment, and an opening, h, at the top for the connection of a pipe to convey the heated air to the building or apartment. 2' is a horizontal annular deflecting-plate arranged within and fitted to the interior of the I casing F just below the openings 9 g and extending inward among the tubes D D.

j is another horizontal annular deflectingplate arranged Within and fitted to the inte- -rior of the casing F above the openingsgg and extending inward as far as the exteriors of 7 the outermost tubes D D.

k is an upright hollow cylinder, open at the top and bottom, closely surrounding the outermost tubes D D, and connected at its lower edge with the inner edge of the plate'j.

The apparatus described is intended to be placed in the basement orlower part of abuilding into which fresh coolair' is copiously admitted, and this air enters the apparatus through the openingsff and g g. The air entering at g 9 below the deflecting-plate or de- 7 fleetorj is distributed among the whole of the tubes D D, instead of only among the outer most ones, asit would otherwise be, andis confined among the said tubes'as it circulates up ward by the deflecting-cylinder or deflector k, and so caused to pass in contact with the whole surface of the bottom of the chamber E of the fliator, whence it passes outward over the [es of the said chamber and over the top ereof before passing to the opening h. The entering at f f passes upward between the sing F and the exterior surface of the flue C, d is heated by contact with the latter sur- :e,and is afterward caused by the deflectingite 0r deflector i to pass over the top of the iler and among the tubes D D, whence it ,sses under,around, and over the chamber E, be further heated in the same manner as e air entering'at g 9, before passing oit' at h; The radiator constructed as described, surundcd by a casing, F, and deflectors 11 7., 1y be arranged at a distancefrom the boiler d supplied with steam by a suitable pipe.

0. T. BOARDMAN.

Viituesses:

J WmTELAW, J. W. COOMBS. 

